Solution : https://service.sap.com/sap/support/notes/330390 (SAP Service marketplace login required)
Summary :
User exits EXIT_SAPLIEDI_001 through EXIT_SAPLIEDI_004 encounter a problem where custom error messages intended for the status record of IDocs are overridden by default messages due to an interface error. The prescribed workaround involves using the FORM routine STATUSFELDER_FUELLEN_2 from program SAPLIEDI to insert user-defined error messages manually. These should trigger an exception NOT_FOUND to apply status 51 correctly, although it should be noted that standard error messages will still appear but can be disregarded.
Key words :
'51' user_msgid user_msgno user_msgv1 user_msgv2 user_msgv3 user_msgv4 sy-repid 'user_exit_sapliedi' ' ', issue user-defined error messages, user exits exit_sapliedi_001, standard error message, form routine statusfelder_fuellen_2, status record immediately, error messages, user exits, standard messages, status record
Related Notes :
| 127178 | Questions about user exits in IDoc INVOIC01 (FI) |